FlowerBed is a java-based IRIS server implementation using the eXist XML database.
The goal of FlowerBed is to be a self-contained, easy-to-use IRIS server. To use it, one only needs to convert their data into serialized IRIS XML format.
Couple with an embedded version of the eXist XML database, this makes FlowerBed an excellent choice for small to medium size registries. It is also ideal for conducting demonstrations and becoming familiar with IRIS.
See the Flowerbed web page for more details.